Thrust bearing problem :

The reason the thrust gets damaged is forward pressure caused by transmission pressure trying to push the converter towards the engine.
This issue can also damage the oil pump & this will destroy the hole engine...

small video of how this happens..



a few pics of the finish product after a few 1/8 mile passes on a brand new FORGE long block..


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The research :
After taking to some engine builders & transmission builders they ALL AGREE in one thing:

 

Stay tune as we go on in full detail, step by step on how to fix this problem...




<---disclaimer:--->
some of the videos, graphs & pics in this tread are just for reference ..only..

 

At what hp level does this start happening?

 

In the VW racing world we have encountered a simular problem . On our flange cranks the thrust bearing gets eaten up exactly as the picture I have seen here. The best repair I have seen is to install a set of replaceable thrust bearing flanges made of Bronze .Here is a link to a picture of what it looks like. I know this may not work on your engines but it might help someone come up with a solution . Mike McCarthy
http://ultimateaircooled.com/attach...508-flanged-crank-endplay-img_0302-large-.jpg

 

I personally ran into a cast Chinese crank that would not work with an auto... 2x. Found the info in a old catalog. Something about the pilot hole is machined different. It wore the thrust bearing AND the crank. I think the crank was ate more lol

 

Out of curiosity, was that video shot with the wiped out thrust or a good one?

 

MMR has the solution already. Are you going to outline a less expensive version?

 

I also read about modifying the block for a thrust bearing. Is that for lower HP's?

 

Not really a good solution.
because the converter is pushing on the crank so hard that it crack the oil pump gears in most cases.

I try the block mod with the billet oil pump gears on the twin setup & it lasted a few years.
But the BIG SINGLE HIT's HARDER than the twins ever did & it only take seconds to trash a hole motor & turbo due to metal shavings feeding threw the oil system

In HIGHT HORSEPOWER drag race APPLICATIONs the issue is even bigger because the hit is out of the hole with a lot of torque, breaking the seal between the pump & the block just enough to starve the farthest out bearing out of oil..

Yes,that's why we gave them a call today.!

MMR 1 805 383 4130

Modular Mustang Racing

This content is protected

We Told Mark what we wanted ,gave Taylor a CC#
Now,we just wait for the parts to get here...

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^^^ Is that a graph from your car?

Are you making any mods to the transmission?

 

There's not a number set in stone, but here are a few cases:

https://www.theturboforums.com/threads/330983-Thrust-bearing-problems?highlight=thrust bearing

https://www.theturboforums.com/thre...-and-ring-choice?highlight=thrust bearing mod

https://www.theturboforums.com/thre...nd-my-lost-power?highlight=thrust bearing mod

https://www.theturboforums.com/threads/341417-Crank-End-Play-Help-MMR?highlight=thrust bearing mod

https://www.theturboforums.com/thre...glide-with-turbo?highlight=thrust bearing mod

https://www.theturboforums.com/threads/377980-Transmission-pressure-vs-Torque-converter-ballooning

BTW
MOST OF THE TIME this issue is RELATED to hevy modify car's that upgraded to GM trasmissions like PowerGlide's or Turbo 400's

https://www.theturboforums.com/threads/377980-Transmission-pressure-vs-Torque-converter-ballooning

 

Got a pm from MMR
"Your kit shipped today - tracking # 1z249a3y........."

Scheduled Delivery:
Thursday, 04/02/2015, By End of Day
Last Location:
Arrived - Los Angeles, CA, United States, Monday, 03/30/2015

 

I'm new to the Mod motor. Is there are thrust bearing problem with a stick shift car?

 

Welcome to our forum.!

https://www.theturboforums.com/threads/341417-Crank-End-Play-Help-MMR?highlight=thrust bearing mod

 

I like this set up. Has anyone seen an external pump that doesn't require the loss of the A/C? I have seen some reverse rotation pumps around but if there is one available already I won't have to machine a bracket.

 

And this bracket saves the a/c? I saw the pump advertised on your site that says it loses the a/c, but not another option.